我正在尝试在 C++ 端的 Java 方法调用上显示 toast
我已经设法调用该方法,甚至获取字符串,但 Toast 不起作用我已经尝试了几乎所有与上下文相关的内容
C++ Side
JavaVMAttachArgs args = { JNI_VERSION_1_6, NULL, NULL };
vm->AttachCurrentThread( &env, &args );
activityConstructor = env->GetMethodID(activity, "<init>", "()V");
jobject object = env->NewObject(activity, activityConstructor);
toastID = env->GetMethodID(activity, "toast", "(Ljava/lang/String;)V");
qDebug() << "Moving";
jstring message1 = env->NewStringUTF("This comes from jni.");
qDebug()<< "Test" << message1;
env->CallVoidMethod(object, toastID, message1);
爪哇端
public void toast(String message){
messageData = message;
Log.d(TAG, message);
new Thread()
{
public void run()
{
esActivity.this.runOnUiThread(new Runnable(){
public void run(){
Log.d("Message in UIThread", messageData);
Toast.makeText(context, messageData, Toast.LENGTH_SHORT).show();
}
});
}
}.start();
}
我在消息中获取字符串值,但此 Toast 没有显示任何内容
任何想法将不胜感激..谢谢